Garmin vívoactive 6 42mm
A slim, light smartwatch for iPhone and Android owners who want Garmin's battery life without a large case.
Check Price on Amazon Read the full reviewThe 10 Best Smartwatches of 2026, Ranked
Our verdict: The best smartwatch in 2026 is the Garmin vívoactive 6 42mm. It tops our ranking with 9.1 out of 10.
Our smartwatch picks
Fewer picks than usual: no other model in the top half is better value.
Garmin Venu 4 45mm
A smartwatch with a bright AMOLED screen and Garmin's week-plus battery.
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Amazfit Bip 6
The cheapest here, with a large 1.97-inch AMOLED screen, GPS and about two weeks of battery.
Check Price on Amazon Read the full reviewAll 10 smartwatches, compared
We compared 17 smartwatches sold in the UK, then ranked ten of them by how happy owners are. These ten cover iPhone-only, Android-only and both-phone watches, from small 40mm cases to large 46mm ones, with battery lives from one day to three weeks and a wide spread of prices. Every product links to its full review below.
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1
Garmin vívoactive 6 42mmBest Choice
9.1 out of 10
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2
Garmin Venu 4 45mmBest Premium
8.8 out of 10
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3
Garmin Forerunner 265
8.8 out of 10
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4
Amazfit Bip 6Best Budget
8.5 out of 10
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- 5 Amazfit Active 2 44mm 8.5 out of 10 Check Price
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6
Amazfit Active 3 Premium
8.5 out of 10
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- 7 Apple Watch SE 3 8.2 out of 10 Check Price
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8
Huawei Watch GT 6 46mm
8.1 out of 10
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9
Google Pixel Watch 5 (45 mm) Wi-Fi
8.0 out of 10
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10
Samsung Galaxy Watch9 40mm Bluetooth SM-L340NZKAEUB
7.5 out of 10
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Why No. 1 beats No. 2
The Garmin vívoactive 6 42mm (9.1) beats the Garmin Venu 4 45mm (8.8) because it leaves owners a little happier.
The full smartwatch reviews
1.Garmin vívoactive 6 42mm
A slim, light smartwatch for iPhone and Android owners who want Garmin's battery life without a large case. It has a 1.2-inch AMOLED screen, built-in GPS, sleep coaching and contactless payments.
What makes up the score
- How happy owners are1st of 10
- How many rated it2nd of 10
- How new it is8th of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Up to 11 days of battery in smartwatch mode
- 1.2-inch AMOLED screen in a light 42mm case
- More than 80 sports apps, built-in GPS and Garmin Coach plans
- Sleep coach, Body Battery and Garmin Pay, with 8GB for music
- Works with both iPhone and Android, rated 5 ATM
Keep in mind
- Single-band GPS, so tracks are less steady among tall buildings than on the Venu 4 or Forerunner 265
- No ECG app
- Fewer third-party apps than Wear OS or Apple
- Battery falls to well under a day with GPS on
2.Garmin Venu 4 45mm
A smartwatch with a bright AMOLED screen and Garmin's week-plus battery. It works with iPhone and Android and adds multi-band GPS, an ECG app and a built-in torch.
What makes up the score
- How happy owners are3rd of 10
- How many rated it4th of 10
- How new it is4th of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Up to 12 days of battery in the 45mm size
- Multi-band GPS and more than 80 sports apps
- ECG app, Body Battery, sleep coaching and a built-in flashlight
- Works with both iPhone and Android, rated 5 ATM
Keep in mind
- Fewer third-party apps than Wear OS or Apple
- Costs more than the Forerunner 265 for a similar battery
- Some extra insights sit behind the optional paid Connect+ tier
- Heavier and larger than the 41mm, so less suited to small wrists
3.Garmin Forerunner 265
A running watch that doubles as a daily smartwatch. Multi-band GPS, training readiness and recovery tools come with up to 13 days of battery.
What makes up the score
- How happy owners are2nd of 10
- How many rated it5th of 10
- How new it is10th of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Multi-band GPS for steadier tracks in cities and under trees
- Training readiness, HRV status and recovery insights
- Up to 13 days of battery as a smartwatch
- Works with iPhone and Android, and stores music for phone-free runs
Keep in mind
- Older design now, with the Forerunner 570 as the newer model
- No ECG app
- The 46mm case is large on small wrists, though a 265S exists
- Battery falls to about a day with GPS on
4.Amazfit Bip 6
The cheapest here, with a large 1.97-inch AMOLED screen, GPS and about two weeks of battery. It handles notifications, workouts and sleep for a budget price.
What makes up the score
- How happy owners are5th of 10
- How many rated it1st of 10
- How new it is7th of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Up to 14 days of typical use
- Large 1.97-inch AMOLED screen and a light 28g case
- Built-in GPS and more than 140 workout modes
- 5 ATM rating and works with iPhone and Android
Keep in mind
- GPS and heart rate are less accurate than on dearer watches
- Limited app support and basic notification replies
- No ECG or serious health sensing
5.Amazfit Active 2 44mm
A budget price for a watch with GPS, maps and a screen that holds up outdoors. Battery lasts around ten days of typical use.
What makes up the score
- How happy owners are4th of 10
- How many rated it3rd of 10
- How new it is9th of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Built-in GPS with five satellite systems and route maps
- Around 10 days of typical use, 21 hours with GPS on
- Works with both iPhone and Android through the Zepp app
- Rated 5 ATM for pool swimming
Keep in mind
- Heart rate and sleep readings are less consistent than Garmin or Apple
- App store is thin, and replies to messages are limited
- Zepp app pushes its paid extras
6.Amazfit Active 3 Premium
A more capable sports watch than the Active 2, with deeper running and recovery tools. It works with iPhone and Android and runs for up to 12 days.
What makes up the score
- How happy owners are6th of 10
- How many rated it6th of 10
- How new it is3rd of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Up to 12 days of battery in typical use
- Built-in GPS with training and recovery tools for runners
- Rated 5 ATM for pool swimming
- Light at around 38g, so comfortable overnight
Keep in mind
- Third-party apps and message replies are limited
- Heart rate and sleep readings are less consistent than Garmin or Apple
- Zepp app pushes its paid extras
- Dearer than the other Amazfit watches here
7.Apple Watch SE 3
The cheaper way into the Apple Watch. It keeps the always-on screen, heart rate, sleep tracking and crash detection, and drops the ECG.
What makes up the score
- How happy owners are7th of 10
- How many rated it7th of 10
- How new it is4th of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Always-on display and the same app support as the dearer models
- Sleep score, sleep apnoea notifications and wrist temperature sensing
- Fall detection, crash detection and Emergency SOS
- Rated to 50 metres, so fine for pool swimming
Keep in mind
- iPhone only
- Around 18 hours of use, so it needs a nightly charge
- No ECG app
- Charges a little slower and has a dimmer screen than the dearer Apple models
8.Huawei Watch GT 6 46mm
A long-lasting fitness watch with a bright AMOLED screen that runs for up to 21 days in light use. It pairs with iPhone or Android, with a few features limited on iPhone.
What makes up the score
- How happy owners are8th of 10
- How many rated it8th of 10
- How new it is4th of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Up to 21 days in light use on the 46mm, and around two weeks in typical use
- 1.47-inch AMOLED screen up to 3,000 nits
- Cycling power estimates and support for external sensors
- 5 ATM and IP69 ratings, with fall detection
Keep in mind
- No ECG on this model, which is reserved for the GT 6 Pro
- On iPhone there is no SOS and no music syncing
- Small app selection, with no Google apps
- Some features need the Huawei Health app, and Health+ is an optional paid extra
9.Google Pixel Watch 5 (45 mm) Wi-Fi
A domed round watch that suits Pixel and other Android phones. Google lists up to 40 hours of battery for the 45mm, and the Gemini assistant and Fitbit-style tracking are built in.
What makes up the score
- How happy owners are9th of 10
- How many rated it9th of 10
- How new it is1st of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Up to 40 hours of battery in the 45mm size, with a quick charge dock
- Gemini assistant, 64GB storage and Wear OS 7
- Rated 5 ATM and IP68 for swimming and rain
- Works with most phones on Android 12 or newer
Keep in mind
- Android only
- Blood pressure trend and insulin resistance features were announced but not available at launch
- Some coaching features sit behind a paid plan
- The larger 45mm is big on a slim wrist
10.Samsung Galaxy Watch9 40mm Bluetooth SM-L340NZKAEUB
A well-rounded Wear OS watch for a Samsung phone owner. It has a bright sapphire-glass screen, Gemini built in and a larger battery than last year's model.
What makes up the score
- How happy owners are10th of 10
- How many rated it10th of 10
- How new it is2nd of 10
Each bar shows its place in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
Why it's here
- Very bright screen, up to 3,000 nits, with sapphire crystal
- 390mAh battery, about a fifth bigger than the previous 40mm
- Wear OS with Google Gemini, 32GB of storage and a good app store
- Heart rate, sleep and a Heart Health Score, with a 40mm size for small wrists
Keep in mind
- Android only, and some health features need a Samsung phone
- Battery life is about a day or two, well short of Garmin or Amazfit
- Bluetooth version has no cellular, so it needs the phone nearby for calls
Before you buy a smartwatch
Which smartwatch is best for iPhone and which for Android?
An Apple Watch works only with an iPhone, so it is the sensible pick if you own one. Wear OS watches such as the Samsung Galaxy Watch9 and Google Pixel Watch 5 need Android, and a few Samsung features need a Samsung phone. Garmin, Amazfit and Huawei work with both iPhone and Android, though some features are limited on iPhone.
How long should a smartwatch battery last?
Full smartwatches such as the Apple Watch SE 3 and Galaxy Watch9 last around one to two days, with the Pixel Watch 5 listed at up to 40 hours in the 45mm size. Garmin, Huawei and Amazfit watches run for roughly 10 days to three weeks. GPS use drains any of them faster.
Are smartwatch heart rate, ECG and blood oxygen readings accurate?
Wrist heart rate is reliable at rest and during steady exercise, and less so in intervals or strength work. An ECG app can flag an irregular rhythm but does not diagnose a heart problem. Blood oxygen is for wellness use on Apple Watches. Check which features are cleared in the UK on each brand's availability page, and speak to a doctor about anything concerning.
Do I need a smartwatch with built-in GPS?
If you run, hike or cycle and want to leave your phone behind, yes. A watch with built-in GPS records the route on its own, while a phone-connected one borrows your phone's signal. Multi-band GPS, found on the Garmin Venu 4 45mm and Forerunner 265, holds a steadier track among tall buildings and trees.
Is a cheap smartwatch worth buying, or should I pay more?
For steps, notifications, sleep and basic workouts, a budget watch such as the Amazfit Bip 6 does the job. You give up some sensor accuracy, app support and the ability to reply to messages. Pay more if you want ECG, reliable GPS, a good app store or payments. Some features, such as Garmin Connect+, add a subscription on top.
Is a smartwatch waterproof enough for swimming?
Look for a 5 ATM or 50 metre rating, which every watch here has or is close to. That covers pool swimming and showers. Hot water and saunas can damage seals, and sea swimming needs a rinse afterwards. Cellular models add a monthly network plan, usually from your mobile provider, on top of the watch price.
How we ranked these ten smartwatches
Every score here comes from our ranking model; no editor sets the order. Too few review sites cover smartwatches for their verdicts to lead, so this ranking is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 17 models for this guide before settling on these ten.
Brands can't pay to be included or to move up. We last checked these picks in October 2026.
How we rank, in fullOur No. 1 smartwatch
Garmin vívoactive 6 42mm
A slim, light smartwatch for iPhone and Android owners who want Garmin's battery life without a large case. 9.1 out of 10.